The science and practice of photography : an elementary textbook on the scientific theory and a laboratory manual (1920)
Roebuck, John R. (John Ransom), 1876-1965 · New York ; London : D. Appleton and company · leaf 102
PHOTOGRAPHY 8o mum in the water-solution absorption curve above except that it is shifted slightly towards the red end of the spectrum. These color density curves are also color sensitiveness curves, as the sensitive- ness is approximately proportional to the density under these circumstances. 51.… … Fig. 14. Luminosity curve for the average eye. with peaks and hollows and not of the kind we would choose for ideal photography.^ If we wish to represent things exactly as they appear to the eye, then the plate should have a sensitiveness curve like the curve for the action of the different colors…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
